When Carol Vanstone, CEO of the technology company Zenotek, expresses her intention to close the Chicago branch, run by her brother Clay, he and his co-workers organize a Christmas party in an effort to impress a potential client and save their jobs. But the party gets out of control… When his uptight CEO sister threatens to shut down his branch, the branch manager throws an epic Christmas party in order to land a big client and save the day, but the party gets way out of hand...